<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
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    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      // 实例化
      const data = new FormData()
      console.log(data)
      // append用来追加数据
      data.append('name1', '奥特曼')
      data.append('skill', '打小怪兽')
      console.log(data.get('skill'))
    </script>
  </body>
</html>
